Retrofittable card reader and carrier select keyboard unit for paystation telephones



FIGS. 1 and 2 are left side, top and front perspective views of a retrofittable card reader and carrier select keyboard unit for paystation telephones showing our new design in two sizes of identical configuration;

FIGS. 3 and 4 are top and bottom plan views thereof presented in an enlarged size;

FIG. 5 is a front elevational view of the unit shown in FIGS. 3 and 4;

FIGS. 6 and 7 are respectively left and right side elevational views of the unit shown in FIGS. 3 and 4.

The broken line showing of two different, conventional styles of paystation telephone in FIGS. 1 and 2 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a retrofittable card reader and carrier select keyboard unit for paystation telephones, as shown. 